remove unused ansible roles

Author: sjpb

requirements.yml

@@ -8,8 +8,6 @@ roles:
   - src: https://github.com/stackhpc/ansible-node-exporter.git
     version: feature/no-install
     name: cloudalchemy.node_exporter
-  - src: cloudalchemy.blackbox-exporter
-    version: 1.0.0
   - src: https://github.com/cloudalchemy/ansible-prometheus.git
     version: 4d2c8d742de39e50387e0aa6d5510b21c7451343 # need fix in preceeding commit for rocky
     name: cloudalchemy.prometheus
@@ -18,8 +16,6 @@ roles:
   - src: https://github.com/stackhpc/ansible-grafana.git
     name: cloudalchemy.grafana
     version: service-state
-  - src: jriguera.configdrive
-  # No versions available
   - src: https://github.com/stackhpc/ood-ansible.git
     name: osc.ood
     version: shpc/releasever # based on v2.0.8